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From: "trippels at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/64425] New: [5 Regression] r219076 causes 36% tramp3d slowdown
Date: Sun, 28 Dec 2014 09:30:00 -0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64425

            Bug ID: 64425
           Summary: [5 Regression] r219076 causes 36% tramp3d slowdown
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: trippels at gcc dot gnu.org
                CC: hubicka at gcc dot gnu.org

Seen on ppc64. Before r219076:

 % g++ -Ofast -w tramp3d-v4.cpp
 % ./a.out --cartvis 1.0 0.0 --rhomin 1e-8 -n 20
Time spent in iteration: 2.40742

After r219076:

 % g++ -Ofast -w tramp3d-v4.cpp
 % ./a.out --cartvis 1.0 0.0 --rhomin 1e-8 -n 20
Time spent in iteration: 3.77864